Difference between revisions of "Admin:Link Spam"
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A while back we disabled anonymous page creation and added a [http://en.wikipedia.org/wiki/CAPTCHA CAPTCHA] to user registration, but that hasn't reduced the quantity of spam; it has continued to increase until we're deleting spam articles on an almost daily basis. We are now taking the following steps: | A while back we disabled anonymous page creation and added a [http://en.wikipedia.org/wiki/CAPTCHA CAPTCHA] to user registration, but that hasn't reduced the quantity of spam; it has continued to increase until we're deleting spam articles on an almost daily basis. We are now taking the following steps: | ||
| − | ;Disabling indexing of link spam | + | ;Disabling indexing and ranking of link spam |
:On the basis that the motivation for link spam is to increase the [http://en.wikipedia.org/wiki/PageRank PageRank™] of the spammers' sites, we aim to make that ineffective by ensuring that the edits are not indexed by Google. We have disabled indexing of all pages in the "Special:" name space, which includes the change history, using a [http://www.robotstxt.org/robotstxt.html site robots policy]. External links from this wiki are ignored for ranking due to the inclusion of the <code>[http://en.wikipedia.org/wiki/Nofollow nofollow]</code> attribute. Indexing of deleted content from page histories is disabled using the [http://www.robotstxt.org/meta.html robots meta tag] with <code>noindex</code> and <code>nofollow</code>. | :On the basis that the motivation for link spam is to increase the [http://en.wikipedia.org/wiki/PageRank PageRank™] of the spammers' sites, we aim to make that ineffective by ensuring that the edits are not indexed by Google. We have disabled indexing of all pages in the "Special:" name space, which includes the change history, using a [http://www.robotstxt.org/robotstxt.html site robots policy]. External links from this wiki are ignored for ranking due to the inclusion of the <code>[http://en.wikipedia.org/wiki/Nofollow nofollow]</code> attribute. Indexing of deleted content from page histories is disabled using the [http://www.robotstxt.org/meta.html robots meta tag] with <code>noindex</code> and <code>nofollow</code>. | ||
| + | ;Hiding potential spam from site users | ||
| + | :We have installed the [http://www.mediawiki.org/wiki/Extension%3aFlaggedRevs Flagged Revisions] MediaWiki extension. Normal users and search engines will not see any edits made to this wiki until the changes have been seen and approved by a reviewer. | ||
| + | ;Blocking references to known spam sites | ||
| + | :We have installed the [http://www.mediawiki.org/wiki/Extension:SpamBlacklist Spam Blacklist] MediaWiki extension. This uses an [http://meta.wikimedia.org/wiki/Spam_blacklist actively maintained blacklist] to block edits containing URLs of sites that have been included in spammed content. | ||
Revision as of 14:43, 30 December 2011
We have had a significant problem with Link Spam on this wiki in recent months (late 2011). We do not wish to prevent public contributions altogether, as any corrections to the Symbian OS Platform Security book are still very welcome and some new material is about to be added to the site which we hope will promote some public participation.
A while back we disabled anonymous page creation and added a CAPTCHA to user registration, but that hasn't reduced the quantity of spam; it has continued to increase until we're deleting spam articles on an almost daily basis. We are now taking the following steps:
- Disabling indexing and ranking of link spam
- On the basis that the motivation for link spam is to increase the PageRank™ of the spammers' sites, we aim to make that ineffective by ensuring that the edits are not indexed by Google. We have disabled indexing of all pages in the "Special:" name space, which includes the change history, using a site robots policy. External links from this wiki are ignored for ranking due to the inclusion of the
nofollowattribute. Indexing of deleted content from page histories is disabled using the robots meta tag withnoindexandnofollow. - Hiding potential spam from site users
- We have installed the Flagged Revisions MediaWiki extension. Normal users and search engines will not see any edits made to this wiki until the changes have been seen and approved by a reviewer.
- Blocking references to known spam sites
- We have installed the Spam Blacklist MediaWiki extension. This uses an actively maintained blacklist to block edits containing URLs of sites that have been included in spammed content.
